Greenfield

MANDATORY IMPORTANT MUST use TaskCreate to break ALL work into small tasks BEFORE starting. MANDATORY IMPORTANT MUST use AskUserQuestion at EVERY stage — validate decisions before proceeding. MANDATORY IMPORTANT MUST NEVER ask tech stack upfront — business analysis and domain modeling first.

Quick Summary

Goal: Guide greenfield project inception from raw idea to an approved, implementable project plan using a full waterfall process.

Workflow (16 steps):

1. Discovery (/idea) — Interview user about problem, vision, constraints, team skills, scale. DO NOT ask about tech stack — keep business-focused.
2. Market Research (/web-research) — WebSearch for competitors, market landscape, existing solutions
3. Deep Research (/deep-research) — WebFetch top sources, extract key findings
4. Business Evaluation (/business-evaluation) — Viability assessment, risk matrix, value proposition
5. Domain Analysis & ERD (/domain-analysis) — Bounded contexts, aggregates, entities, ERD diagram, domain events. Validate every context boundary with user.
6. Tech Stack Research (/tech-stack-research) — Derive technical requirements from business + domain analysis. Research top 3 options per stack layer (backend, frontend, database, messaging, infra). Detailed pros/cons matrix, team-fit scoring, market analysis. Present comparison report for user to decide.
7. Architecture Design (/architecture-design) — Research and compare top 3 architecture styles (Clean, Hexagonal, Vertical Slice, etc.). Evaluate design patterns (CQRS, Repository, Mediator). Audit against SOLID, DRY, KISS, YAGNI. Validate scalability, maintainability, IoC, technical agnosticism. Present comparison with recommendation.
8. Implementation Plan (/plan) — Create phased plan using confirmed tech stack + architecture + domain model
9. Security Audit (/security) — Review plan for OWASP Top 10, auth patterns, data protection concerns
10. Performance Audit (/performance) — Review plan for performance bottlenecks, scalability, query optimization
11. Plan Review (/plan-review) — Full plan review, risk assessment, approval
12. Refine to PBI (/refine) — Transform idea + reviewed plan into actionable PBI with acceptance criteria
13. User Stories (/story) — Break PBI into implementable user stories
14. Plan Validation (/plan-validate) — Interview user with critical questions to validate plan + stories
15. Test Strategy (/tdd-spec) — Test pyramid, frameworks, spec outline
16. Workflow End (/workflow-end) — Clean up, announce completion

Key Rules:

• PLANNING ONLY: never implement code
• Every stage saves artifacts to plan directory
• MANDATORY IMPORTANT MUST every stage requires AskUserQuestion validation before proceeding
• Delegate architecture decisions to solution-architect agent
• Present 2-4 options for every major decision with confidence %
• Business-First Protocol: Tech stack is NEVER asked upfront. Business analysis (steps 1-5) + domain modeling (step 6) must complete first. Tech stack is derived from requirements through research and presented as a comparison report with options.
• MANDATORY IMPORTANT MUST architecture design and scaffold steps MUST include code quality gate tooling setup — linter, static analyzer, formatter, pre-commit hooks, CI quality gates, and build-time enforcement are NON-SKIPPABLE infrastructure.

Entry Point

This skill is the explicit entry point for the greenfield-init workflow.

When invoked:

1. Activate the greenfield-init workflow via /workflow-start greenfield-init
2. The workflow handles step sequencing, task creation, and progress tracking
3. Each step delegates to the appropriate skill (idea, web-research, domain-analysis, tech-stack-research, etc.)
4. The solution-architect agent provides architecture guidance throughout

When to Use

• Starting a brand-new project from scratch
• No existing codebase (empty project directory)
• Planning a new application before writing any code
• Want structured waterfall inception with user collaboration at every step

When NOT to Use

• Existing codebase with code (use /plan or /feature instead)
• Bug fixes, refactoring, or feature implementation
• Quick prototyping (use /cook-fast instead)

Output

All artifacts saved to plan directory:

plans/{id}/
  research/
    discovery-interview.md
    market-research.md
    deep-research.md
    business-evaluation.md
    domain-analysis.md
    tech-stack-comparison.md
    architecture-design.md
  phase-01-domain-model.md
  phase-02-tech-stack.md
  phase-02b-architecture.md
  phase-03-project-structure.md
  phase-04-test-strategy.md
  phase-05-backlog.md
  plan.md (master plan with YAML frontmatter)

After completion, recommend next step: /cook to scaffold the project structure.

Be skeptical. Apply critical thinking, sequential thinking. Every claim needs traced proof, confidence percentages (Idea should be more than 80%).

MANDATORY IMPORTANT MUST break work into small todo tasks — one per workflow step. MANDATORY IMPORTANT MUST validate with user at EVERY step — never auto-decide. MANDATORY IMPORTANT MUST add a final review todo task to verify work quality and identify fixes/enhancements.